12820853 has 2 divisors, whose sum is σ = 12820854. Its totient is φ = 12820852.

The previous prime is 12820849. The next prime is 12820879. The reversal of 12820853 is 35802821.

12820853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12802084 + 18769 = 3578^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 12820853 - 2² = 12820849 is a prime.

It is a Chen prime.

It is equal to p₈₃₈₃₅₂ and since 12820853 and 838352 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12820883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6410426 + 6410427.

It is an arithmetic number, because the mean of its divisors is an integer number (6410427).

Almost surely, 2^12820853 is an apocalyptic number.

It is an amenable number.

12820853 is a deficient number, since it is larger than the sum of its proper divisors (1).

12820853 is an equidigital number, since it uses as much as digits as its factorization.

12820853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 12820853 is about 3580.6218733622. The cubic root of 12820853 is about 234.0483804316.

The spelling of 12820853 in words is "twelve million, eight hundred twenty thousand, eight hundred fifty-three".